Office



mL hr. I W S uw.. W ow N O D R 0 G HL vLAMP HAVING REGENERATIVE GAS BURNER.

No. 539,17 5. .Patented May 14, 1895.

@www ge o cams PETERS au. PHOTO-LMD.. wAsnlNG'ron D c UNITED STATES PATENT OFFICE.

THOMAS GORDON AND WILLIAM R. SWIFT, NEW YORK, N. Y., ASSIGNORS TO THE GORDON-MITCHELL GAS LAMP COMPANY, OF SAME PLACE.

LAMP HAVING REGENERATIVE GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 539,175, dated May 14, 1895.

Application filed April 3, 1891. Serial No. 387,499.

(No model.)

AWILLIAM R. SWIFT, of New York, in the county yand State of NewYork, have invented a. certain new and useful 'Improvement in Lamps Having Regenerative Gas-Burners, of which the following is a specication.

IVe will describe burners embodying our improvement, and thenpoint out the novel features in the claims.

In the accompanying drawings, Figure 1 represents at the right of the center an outside view and at the left of the center a central vertical section of a suspended lamp embodying Our improvement. Fig. 2 represents at the right of the center an outside View and at the left of the centera central vertical section of a modified form of lamp. Y

In Fig. l, A is a gas supply pipe communieating at the upper end with a source of gas and leading to a gas chamber B, which as K here shown, consists of a plate-like portion b having at its upper part an internally screwthreaded socket b', with which the gas supply pipe engages and a shell-like portion b2, here shown to be cylindrical in form, having formed integral with it at the lower end, a diaphragm b3. The plate like portion b may be united with the cylindric portion b2 of the gas chamber. The interior surface of the platelike portion b is shown as being dome-shaped. A number of tubes b4 arranged in a circle extend from the interior of the gas chamber down through the diaphragm b3 thereof. They may be fastened friction tight or otherwise in said diaphragm. The lower ends of the tubes preferably extend through holes in a ring b5, and are thereby properly spaced and sustained. The diaphragm forming the bottom of the gas chamber has formed on the exterior of its central portion a part h6. From the ring b5 a diaphragm 117 extends inwardly toward a post bs, and has a central opening through which air may ascend. Outside the cylindric portion of the gas chamber, a deilector b9 is arranged, and this directs air to the outer side of the dame. The post bs extends downwardly from the detlector of the gas chamber B, and at the lower end sustains a part C, provided with radial openings for the admission of air and a seat bw for a combustion chamber D, which is made in the form of a globe. An air distributor E is fitted to the part C above its radial openings, and is contracted toward the upper end, Where it terminates in a cylindric portion which is open at the top. Air may pass through the open top of this air distributer to the part h, and from the latter between the gas tubes h4 to the delector b9 and thence to the outside 6o of the flame. The air escaping from the perforations of the air distributer E may support combustion at the tip of the tubes b4. A hood F is sustained by the gas supply pipe above the combustion chamber. 65

Outside the cylindric part of the gas chamber B and the detlector b9 is a shell bu of asbestos, porcelain or like substance, which not only protects the gas chamber from undue heating by reason of being a poor heat con- 7o ductor, but affords a white reflecting surface. This shell bu may rest upon an outward projection at the lower end of the deiiector b9. With corresponding advantage a shell 612 of similar material may surround the gas supply pipe A within the combustion chamber D. When such a shell is used, it may rest upon the top of the gas chamber.

In Fig. 2, the gas chamber B is constructed similarly to the gas chamber already de- 8o scribed, and is supplied with gas by a descending pipe A', and surrounded by a deflector Z213. In this instance, the deflector is made considerably larger circumferentially than the gas chamber, so as to leave between it and the gas chamber a spaceA for the circulation of air, and this deileetor is sul-mounted by a tube 514 which surrounds the upper part of the gas chamber and the gas supply pipe, but is so much larger than these parts as to afford 9o a passage for air.

A short distance below the gas chamber, the deflector has connected to it a diaphragm or plate 515, through which the gas tubes b1 ofthe burner pass. A post b extends downwardly from the gas chamber and sustains a part O.

The diaphragm or plate Z915 does not extend inwardly as far as the post b, but has a central opening, which is a passage for air around :oo

`the post. A perforated air distributor E which is contracted upwardly and at the upper end has a cylindric portion which is open at the top, communicates with the opening in the diaphragm or plate Z115. This air distributer is supported by the part C', which has radial openings for the entrance of air. Air ascending throughl the air distributer and through an opening of the diaphragm or plate 1115 passes under the gas chamber, then around the side of the same and afterward up over its top and around the gas supply pipe, escaping at the upper extremity of the tube Z114. Air passing through the perforations of the air distributer E supports combustion at the tip of the burner tubes B14.

The part O is provided with a seat for a combustion chamber D of globe form, and above the latter a hood F is fastened to the gas supply pipe. By the peculiar construction of the deector 513, with its diaphragm or plate Z215 and the tubes b1, we form a passage through which air may circulate for the purpose of preventing the gas supply pipe from beingunduly heated by the products ot combustion.

In every one of the described examples of our improvement, there is formed an air heating chamber, which is entirely between the tip ofthe gas burner or gas burner tubes and the base of the gas chamber. It is formed within a deflector arranged outside the burner tubes.

Having described our invention, what we consider as new, and desire to secure by Letters Patent, is

1. In a lamp having a regenerative burner, the combination of a gas chamber, gas burner tubes extending below said chamber, an upwardly contracted perforated shell, a shell surrounding the gas chamber and tubes, a diaphragm extending inwardly from the latter shell, and below said gas cl1ambcr,l1aving holes through which said tubes pass and having an opening communicating with the contracted top of the perforated shell, substantially as specified.

2. In a lamp having a regenerative burner, the combination of a gas chamber, a supply i pipeleading thereto, gas burner tubes extending below said chamber, an upwardly contracted perforated shell having at its upper end a cylindric open topped portion, a shell surrounding the gas chamber and tubes, a tube sui-mounting said shell and surrounding the supply pipe, a diaphragm extending' inwardly from the latter shell, and below the gas chamber, havingholes through which the tubes pass and having an opening with a downwardly turned Flange communicating withthe open topped cylindric portion of the perforated shell, substantially as specified.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

THOMAS GORDON. YVILLIAM R. SWIFT. tifitiiesses:

S. O. EDMoNDs, WILLIAM M. ILIFF. 

